using classes instead of pure generators in component

tests/test_components.py

@@ -4,7 +4,7 @@ from datetime import datetime, timedelta
 
 from unittest2 import TestCase
 from collections import defaultdict
-from zipline.gens.composite import date_sorted_sources
+from zipline.gens.composites import date_sorted_sources
 
 from zipline.finance.trading import SIMULATION_STYLE
 from zipline.core.devsimulator import AddressAllocator
@@ -16,17 +16,13 @@ from zipline.utils.test_utils import (
         launch_monitor
 )
 
-
 from zipline.core import Component
-from zipline.core.component import ComponentSocketArgs
 from zipline.protocol import (
     DATASOURCE_FRAME,
     DATASOURCE_UNFRAME
 )
 
 from zipline.gens.tradegens import SpecificEquityTrades
-from zipline.gens.sort import date_sort
-from zipline.gens.zmqgen import gen_from_poller
 
 import logbook
 log = logbook.Logger('ComponentTestCase')
@@ -85,7 +81,6 @@ class ComponentTestCase(TestCase):
 
     def test_sort(self):
         monitor     = create_monitor(allocator)
-        poller      = zmq.Poller()
         socket_uris    = allocator.lease(3)
         count       = 100
 
@@ -102,9 +97,7 @@ class ComponentTestCase(TestCase):
 
 
         comp_a = Component(
-            SpecificEquityTrades,
-            args_a,
-            kwargs_a,
+            SpecificEquityTrades(*args_a, **kwargs_a),
             monitor,
             socket_uris[0],
             DATASOURCE_FRAME,
@@ -124,9 +117,7 @@ class ComponentTestCase(TestCase):
 
 
         comp_b = Component(
-            SpecificEquityTrades,
-            args_b,
-            kwargs_b,
+            SpecificEquityTrades(*args_b, **kwargs_b),
             monitor,
             socket_uris[1],
             DATASOURCE_FRAME,
@@ -144,9 +135,7 @@ class ComponentTestCase(TestCase):
         }
 
         comp_c = Component(
-            SpecificEquityTrades,
-            args_c,
-            kwargs_c,
+            SpecificEquityTrades(*args_c, **kwargs_c),
             monitor,
             socket_uris[2],
             DATASOURCE_FRAME,

zipline/core/component.py

@@ -8,7 +8,6 @@ import uuid
 import time
 import socket
 import logbook
-import traceback
 import humanhash
 import multiprocessing
 from setproctitle import setproctitle
@@ -25,7 +24,6 @@ from zipline.core.monitor import PARAMETERS
 from zipline.protocol import (
     CONTROL_PROTOCOL,
     COMPONENT_STATE,
-    COMPONENT_FAILURE,
     CONTROL_FRAME,
     CONTROL_UNFRAME,
     EXCEPTION_FRAME
@@ -48,24 +46,18 @@ class Component(object):
 
     def __init__(self,
             generator,
-            component_id,
             monitor,
             socket_uri,
             frame,
             unframe
             ):
 
-        assert component_id, \
-            "Every component needs a unique and invariant identifier"
-        assert isinstance(component_id, basestring), \
-            "Components must have string IDs"
-
         # -----------------
         # Generator
         # -----------------
         self.generator              = generator
         self.frame                  = frame
-        self.component_id           = hash(self.generator)
+        self.component_id           = self.generator.get_hash()
 
         # lock for waiting on monitor "GO"
         self.waiting                = None
@@ -120,7 +112,7 @@ class Component(object):
         The core logic of the all components is run here.
         """
         # The process title so you can watch it in top, ps.
-        setproctitle(self.gen_func.__name__)
+        setproctitle(self.generator.__class__.__name__)
         self.prefix = "FORK-"
 
         log.info("Start %r" % self)